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Requirement Analysis & Definition:
All requirements of the system which has to be developed are collected in this step. Like in other process models requirements are split up into functional requirements and constraints that the system has to fulfill.
PSY406 HANDOUTS PDF
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Requirements have to be collected by analyzing the needs of the end-user(s) and checking them for validity and the possibility to implement them.
The aim is to generate a Requirements Specification Document which is used as an input for the next phase of the model.
The system has to be properly designed before any implementation is started. This involves an architectural design that defines and describes the main blocks and components of the system, their interfaces, and interactions.
PSY406 HANDOUTS-EDUCATIONAL PSYCHOLOGY:
By this, the needed hardware is defined and the software is split up into its components. E.g. this involves the definition or selection of a computer platform, an operating system, other peripheral hardware, etc.
The software components have to be defined to meet the end-user requirements and to meet the need for possible scalability of the system.
PSY406 HANDOUTS PDF-EDUCATIONAL PSYCHOLOGY:
The aim of this phase is to generate a System Architecture Document this serves as an input for the software design phase of the development, but also as an input for a hardware design or selection activities. Usually, several documents are generated at this stage, one for each specialty, so that: The software is usually given a software architecture document.